#include<stdio.h>

int Sum(int s,int e)
{
  int result =0;
  for(int i=s;i<=e;i++)
  {
    result+=i;
  }
  return result;
}
int main()
{
  int start=1;
  int end=100;
  printf("I will begin\n");
  int n=Sum(start,end);
  printf("Running done,result is: [%d-%d]=%d\n",start,end,n);
  return 0;
}
